Find the most up-to-date version of SAE AMS-C at Engineering MIL-CC. 3 MY les5. MILITARY SPECIFICATION. This specification ie approved for we by all. Departfmnta and Agencie8 of the Oapartmmt of. Defense. 1. SAE AMS-C Electroless Nickel Coatings. SAE AMS-C Revision D, June Complete Document. Electroless Nickel Coatings. Includes all.
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Composites can be plated directly by using special pretreatments to prevent the basis material from contaminating the bath or to obtain adequate coating adhesion.
The nickel coatings shall be classified in accordance with the thermal treatment applied subsequent to plating.
With aluminum electronic devices, not only is product contamination prevented, but the coated parts facilitate soldering when used in conjunction with a mildly activated RMA or activated RA rosin flux. The selected samples shall be subjected to a sustained tensile load equal to percent of the maximum design yield load for which the part was designed.
AMS-C-26074 and MIL-C-26074 – An explanation of the revision path
AMS-CB is therefore reinstated 20674 is designated as a noncurrent document. As you can see by my posting, the MIL-C has had a long strange history! Our drawing states to process parts to MIL-C The separate test specimens used for salt-spray testing shall be 4 inches by 6 inches. Military Specification MIL-CE, and contains only minor editorial and format changes required to bring it into conformance with the publishing requirements of SAE technical standards.
The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole responsibility of the user. However, it is not advised for new design.
SAE AMS-CB 化学镀镍(英文)_百度文库
Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements ame herein, unless disapproved by the Government.
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MIL-C D COATINGS ELECTROLESS NICKEL REQUIREMENTS
For example, a cold-rolled steel surface shall not be used to represent a hot-rolled steel surface; owing to the impracticability of forging or casting separate test specimens, hot-rolled steel specimens may be used to represent forged and cast steel parts. Required 260774 can be achieved by heating using the 2674 schedule: Excellent uniform deposits are produced on irregular parts.
The coating adhesion after completion of all processing and thermal treatments shall be such that when examined at a magnification of 4X, the coating shall not show separation from the basis metal when tested in accordance with ASTM B as specified in 4.
The articles, parts or test specimens shall be held under load for at least hours and then examined for fracture.
Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the government to accept defective material.
The lot shall be rejected if any coated article, part, or test specimen shows cracking or fracture of the basis metal.
A hardness test shall be run once a month, on four randomly selected parts representing the months production, or on four separately coated specimens as specified in 4. Class and amz, and heat treatment or condition see 1. Heat treatment increases coating magnetism.
Class 2 hardness coatings: This is a stabilized document.
Unless otherwise specified, the a,s peening shall be accomplished on all surfaces for which the coating is required and all immediately adjacent surfaces when they contain notches, fillets or other abrupt changes of section size where stresses will be concentrated. Formation of cracks that do not result in loss of plating adhesion is acceptable.
A hydrogen embrittlement relief test shall be run once per month on a random sample of 4 parts as specified in 4.